Gas-heater.



No. 766,446. PATENTED AUG. 2, 1904. G. J. KARLE & R. M. HATCH.

GAS HEATER.

APPLICATION FILED PEB.19. 1904.

N0 MODEL.

Patented August 2, 1904.

UNITED STATES PATENT @FEICE.

GEORGE J. KARLE AND RAYMOND M. HATCH, OF BUFFALO, NElV YORK.

GAS-H EATER.

SPECIFICATION forming part of Letters Patent No. 766,446, dated August2, 1904. Application filed February 19, 1904. Serial No. 194,363- (Nomodel.)

To a, whom/ if 7171/!7/ concern:

Be it known that we, GEORGE J. KARLE and RAYMOND M. HA'ron, citizens ofthe United States, residing at Buffalo, in the county of Erie and Stateof New York, have invented a new and useful Gas-Heater, of which thefollowing is a specification.

This invention relates to gas-heating stoves, and has for its object tosimplify and improve the construction and produce a device of thischaracter which may be cheaply constructed, easily installed, and inwhich the gas will be economically consumed and its heat-impartingqualities fully utilized and in which the supply of gas and air may beperfectly controlled and regulated.

WVith these and other objects in view, which will appear as the natureof the invention is better understood, the same consists in certainnovel features of construction, as hereinafter fully described andclaimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designating characters,is illustrated the preferred form of the embodiment of the invention, it

being understood that the invention is not necessarily limited thereto,as various changes in the shape, proportions, and general assemblage ofthe parts may be resorted to without departing from the principle of theinvention or sacrificing any of its advantages, and the right istherefore reserved of making all the changes and modifications whichfairly fall within the scope of the invention and the claims madetherefor.

In the drawings thus employed, Figure 1 is a sectional elevation. Fig. 2is a transverse section on the line 2 2 of Fig. 1. Fig. 3 is atransverse section, enlarged, through the aircontrolling valve. Fig. Lis a plan view of a portion of the top of the radiating and circulatingshell.

The improved apparatus comprises, primarily, a burner portion and aconductor shell or drum, the burner portion consisting of a tubularmixing-chamber 10, having at one end 7 a gas-supply pipe 11 andfeed-valve 12 of the ordinary construction and with the other endenlarged into a laterally-extending chamber 13, having attached to itsupper open side and spaced from its rim a deflector-plate 14, the

plate having spaced lugs 15 for holding it. away from the chamber 13 andsecured thereto, as by one or more clamp-bolts 16. Fitting into thebottom of the chamber 10 is a threaded plug 17, having a contractedorifice 18, the gas-feed valve 12 being connected to the lower end ofthe plug. Transversely disposed through the chamber 10 are spacedapertures 19 to admit air to the chamber and having a rotating valve 20,provided with corresponding apertures 21 to control the amount of airadmitted. The threaded plug 17 is adapted to be proiectedinto theinterior of the chamber 10 opposite the apertures 19 to reduce theirarea, and thus correspondingly reduce the amount of air admittedtherethrough, and to prevent accidental displacement of the plug astop-ring 22 is inserted between the lower end of the chamber 10 and aflange 23 on the plug. By this simple means the upward movement of theplug relative to the mixing-chamber is limited, and by varying thethickness of the stop-ring any desired size or area of air-inlet may beprovided. This is an important feature of the invention and addsmaterially to the value and efliciency of the device.

Radiating from the chamber 10 are arms 24, having an annular frame 25connected to their outer ends,the chamber, arms, and frame beingpreferably cast in one piece, and connected to the frame is a shell ordrum 26, extending upwardly to any desired distance.

The frame 25 will be so positioned relative to the burner 13 let thatthe lower line of the drum 26 comes below the lower line of the burner,and resting upon the arms 24 is a perforated plate 27 to retard theinflowing aircurrents and prevent too strong currents from reaching theburner. 1

Surrounding the upper edge of the drum 26 and spaced therefrom byspreader-lugs 28 is an annular frame 29, the spreader-lugs having spurs30 extending inwardly through apertures in the drum and by which meansthe drum and frame are connected. The lugs 28 do not extend to the upperrim of the frame 29, leaving shoulders to support a deflectingplate 31,spaced above the upper rim of the drum 26 to provide for the escape ofthe heated air.

Extending inwardly from the frame 29 are stop-lugs 32, projecting'abovethe plate 31 and preventing upward movement of the same, and to providefor the insertion and removal of the plate a notch 33 is cut in itsperiphery at one point, so that when the plate is set with the notchopposite one of the stoplugs the plate can be elevated or depressed andinserted or removed, as desired. After insertion the plate may berotated to bring the notch 33 out of alinement with the lugs 32 toprevent accidental displacement.

The lower frame 25'will preferably be supplied with spacedsupportinglegs 34 to enable it to be moved from place to place byemploying a flexible. or hose connection to the feeder-valve.

By this arrangement it is obvious that a very compact, simply andcheaply constructed heater is produced through which air-currents arecaused to flow and in which they will be rapidly heated and dischargedbetween the shell or drum 26 and the frame 29 with accelerated force.The retardation of the air in the drum caused by the relativelycontracted area between the plate 31 and shell 26 is an importantfeature of the invention and adds greatly to the efiectivenes's of thedevice and materially increases the volume of heated air passing throughthe shell or drum.

The device may be constructed of any desired size and capacity and ofany suitable material.

The frames 25- and 29, together with the legs 34:, may be of anyfanciful design and plated or otherwise ornamented, as desired.

Having thus described the invention, what is claimed is 1. Inagas-stove,atubular mixing-chamber having at one end a gas-supply connection andenlarged at the other end into a laterally-extended chamber having adeflecting plate spaced from its upper rim and forming the burner andwith transverse air-apertures disposed intermediately of themixing-chamber, avalve for controlling the air entering said apertures,a circulating-shell inclosing said burner and extending above the same,an annular frame supported upon the upper end of said circulating-shelland extending laterally therefrom, and a deflecting-plate supported bly1slaid annular frame and spaced from said s e 2. Ina gas-stove, atubular mixing-chamber having at one end a gas-supply connection andenlarged at the other end into a laterally-extended chamber having adeflecting plate spaced from its upper rim and forming the burner andwith transverse air-apertures disposed intermediately of themixing-chamber, a valve for controlling the air entering said apertures,arms radiating from said mixing chamber,an annular frame connected withsaid arms below said burner, a circulating-shell engaging said frame andextending above said burner, and a perforated plate resting upon saidradiating arms and controlling the air entering said shell.

3. In a gas-stove, a circulating-shell having a gas-burner positioned inits lower part, an annular frame inclosing the upper portion of theshell and spaced therefrom and extending above the same and withinwardly-extending radial supporting-lugs having spurs for engagingapertures in said shell, and a deflecting-plate supported on said lugsand spaced fromsaid shell.

I. In a gas-stove, a circulating-shell having a gas-burner positioned inits lower part, an annular frame inclosing the upper portion of theshell and spaced therefrom and extending above the same and withinwardly-extending radial supporting-lugs having spurs for engagingapertures in said shell and spaced'below the upper line of the frame,said frame having inwardly-extending stop-lugs spaced apart and spacedabove said supporting-lugs, and adeflecting-plate supported upon saidsupporting-lugs and prevented from displacement by said stop-lugs.

5. In a gas-stove, a circulating-shell having a gas-burner positioned inits lower part, an annular frame inclosing the upper portion of theshell and spaced therefrom and extending above the same and withinwardly-extending radial supporting-lugs having spurs for engagingapertures in said shell and spaced below the upper line of the frame,said frame having inwardly-extending stop-lugs spaced apart and spacedabove said supporting-lugs, and a deflecting-plate supported upon saidsupporting-lugs and provided with a peripheral notch at one point topermit of its insertion between said radial lugs when placed in acertain predetermined position.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in the presence of two witnesses.

GEORGE J. KARLE. RAYMOND M. HATCH. W'itnesses:

M. I. GRIFFIN, JOHN G. CLoAK.

